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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/07/2019 |
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Data da última atualização: |
11/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, S. G. dos; RIBEIRO, F. da S.; ALVES, G. C.; SANTOS, L. A.; REIS, V. M. |
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Afiliação: |
Silvana Gomes dos Santos, Universidade Federal Rural do Rio de Janeiro; Flaviane da Silva Ribeiro, Instituto Federal do Pará, Campus Bragança; Gabriela Cavalcanti Alves, UFRRJ; Leandro Azevedo Santos, UFRRJ; VERONICA MASSENA REIS, CNPAB. |
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Título: |
Inoculation with five diazotrophs alters nitrogen metabolism during the initial growth of sugarcane varieties with contrasting responses to added nitrogen. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plant and Soil, First Online, 08 May, 2019 |
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Idioma: |
Inglês |
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Notas: |
Publicado na Plant and Soil, v. 451, 25-44, 2020. |
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Conteúdo: |
We examined the influence of inoculation with five species/strains of diazotrophic bacteria on the modulation of two enzymes involved in the assimilation of N and on the soluble N fractions in the sugarcane varieties RB867515 (adapted for low fertility soils) and IACSP95-5000 (adapted for medium to high fertility soils) under high- (3 mM) and low (0.3 mM)-N conditions in hydroponic cultivation for 59 days.The sugarcane plants were produced in three steps to obtain the hydroponic cultivation: the supply of 3 mM N for 30 days (first harvest), N depletion for 72 h (second harvest), and cultivation in high- and low-N conditions over 26 days (final harvest). Inoculation was performed by immersion of the minisetts in a diluted solution of five diazotrophic bacteria. After the final harvest, plants were divided into roots and shoots to assess their dry weight and N, P, and K accumulation.The variety played an important role in the interaction with diazotrophs, each showing distinct behavior in the activity of their N-assimilation enzymes. The nitrate reductase activity (NRa?EC 1.7.1.1) was increased in var. RB867515 by 26% in the shoots and by 48% in the roots after 72 h under N depletion, while var. IACSP95-5000 showed a reduced enzymatic activity in the roots (by 62%) but not in the shoots. Under high-N conditions, the inoculated IACSP95-5000 plants showed 31% higher glutamine synthetase activity (GSa?EC 6.31.2) compared with 19% in RB867515. Under low-N conditions, the GSas were 21% and 16% higher in the inoculated RB867515 and IACSP95-5000 plants, respectively, compared with that of the control. The content of nitrogen in the form of nitrate (N-nitrate) confirmed these varietal differences, but the soluble sugar content did not. MenosWe examined the influence of inoculation with five species/strains of diazotrophic bacteria on the modulation of two enzymes involved in the assimilation of N and on the soluble N fractions in the sugarcane varieties RB867515 (adapted for low fertility soils) and IACSP95-5000 (adapted for medium to high fertility soils) under high- (3 mM) and low (0.3 mM)-N conditions in hydroponic cultivation for 59 days.The sugarcane plants were produced in three steps to obtain the hydroponic cultivation: the supply of 3 mM N for 30 days (first harvest), N depletion for 72 h (second harvest), and cultivation in high- and low-N conditions over 26 days (final harvest). Inoculation was performed by immersion of the minisetts in a diluted solution of five diazotrophic bacteria. After the final harvest, plants were divided into roots and shoots to assess their dry weight and N, P, and K accumulation.The variety played an important role in the interaction with diazotrophs, each showing distinct behavior in the activity of their N-assimilation enzymes. The nitrate reductase activity (NRa?EC 1.7.1.1) was increased in var. RB867515 by 26% in the shoots and by 48% in the roots after 72 h under N depletion, while var. IACSP95-5000 showed a reduced enzymatic activity in the roots (by 62%) but not in the shoots. Under high-N conditions, the inoculated IACSP95-5000 plants showed 31% higher glutamine synthetase activity (GSa?EC 6.31.2) compared with 19% in RB867515. Under low-N conditions, the GSas were... Mostrar Tudo |
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Palavras-Chave: |
Diazotrophic bacteria; Enzymatic activity; Saccharum sp. |
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Thesaurus Nal: |
Nitrogen. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 5 | |
| 1. |  | CRUZ, G. V.; GONÇALVES, B. L. M.; LISBOA, M. A. N.; MENDONÇA, A. C. A. M.; DRUMOND, M. A.; CALIXTO JÚNIOR, J. T. Fenologia de duas Vochysiaceae em fragmento de Cerrado sensu stricto no Sul do Ceará: resultados parciais. In: CONGRESSO NACIONAL DE BOTÂNICA, 70.; REUNIÃO NORDESTINA DE BOTÃNICA, 36., 2019, Maceió. Valorizando a diversidade vegetal, protegendo Biomas nordestino: anais. Maceió: Sociedade Botânica do Brasil: Universidade Federal de Alagoas, 2019. p. 146-147.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 2. | | CALIXTO JÚNIOR, J. T.; MOURA, J. C.; CRUZ, G. V.; LISBOA, M. A. N.; MENDONÇA, A. C. A. M.; DRUMOND, M. A.; GONÇALVES, B. L. M.; SAMPAIO, E. S. T. B.; QUEIROZ, M. G. S. Diversidade alfa e beta em enclave de Cerrado sensu stricto no Sul do Ceará. In: CONGRESSO NACIONAL DE BOTÂNICA, 70.; REUNIÃO NORDESTINA DE BOTÃNICA, 36., 2019, Maceió. Valorizando a diversidade vegetal, protegendo Biomas nordestino: anais. Maceió: Sociedade Botânica do Brasil: Universidade Federal de Alagoas, 2019. p. 671-672.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
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| 3. | | CALIXTO JÚNIOR, J. T.; MOURA, J. C. de; LISBOA, M. A. N.; CRUZ, G. V.; GONÇALVES, B. L. M.; BARRETO, E. S. de S. T.; BARROS, L. M.; DRUMOND, M. A.; MENDONÇA, A. C. A. M.; ROCHA, L. S. G.; SILVA, M. A. P. da; CORDEIRO, L. S. Phytosociology, diversity and floristic similarity of a Cerrado fragment on Southern Ceará state, Brazilian Semiarid. Scientia Forestalis, v. 49, n. 130, e3459, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Semiárido. |
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| 4. | | MOURA, J. C. de; LISBOA, M. A. N.; GONÇALVES, B. L. M.; CRUZ, G. V.; BARRETO, E. S. S. T.; PINHO, A, I.; SANTOS, M. A. F. dos; CORDEIRO, L. da S.; MENDONÇA, A. C. A. M.; SILVA, M. A. P. da; BARROS, L. M.; SILVA, T. I. da; ROCHA, L. S. G.; DRUMOND, M. A.; CALIXTO JÚNIOR, J. T. Influence of soil type and rocky outcrops on the species distribution in a woody plant community at brazilian Semiarid. Journal of Agricultural Science, v. 12, n. 5, p, 155-166, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Semiárido. |
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| 5. | | RODRIGUES, F. C.; MORAIS-BRAGA, M. F. B.; ALMEIDA-BEZERRA, J. W. A.; BEZERRA, J. J. L.; FONSECA, V. J. A.; ARAÚJO, A. C. J. DE; COUTINHO, H. D. M.; RIBEIRO, P. R. V.; CANUTO, K. M.; MENDONÇA, A. C. A. M.; OLIVEIRA, A. F. M. DE. Chemical composition and antimicrobial activity of Cordiera myrciifolia leaves against pathogenic bacteria and fungi: Drug potentiation ability and inhibition of virulence. Fitoterapia, 176, 106027, 2024.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| Registros recuperados : 5 | |
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